cms/org.argeo.slc.client.ui/src/org/argeo/slc/client/ui/controllers/ProcessController.java

   1 package org.argeo.slc.client.ui.controllers;
   2
   3 import javax.jcr.Node;
   4 import javax.jcr.RepositoryException;
   5
   6 import org.argeo.slc.SlcException;
   7 import org.argeo.slc.execution.ExecutionProcess;
   8 import org.argeo.slc.execution.SlcAgent;
   9 import org.argeo.slc.jcr.execution.JcrExecutionProcess;
  10
  11 /**
  12  * We use a separate class (not in UI components) so that it can be a singleton
  13  * in an application context.
  14  */
  15 public class ProcessController {
  16         // private final static Log log =
  17         // LogFactory.getLog(ProcessController.class);
  18         // private Map<String, SlcAgentFactory> agentFactories = new HashMap<String,
  19         // SlcAgentFactory>();
  20
  21         private SlcAgent agent;
  22
  23         public ExecutionProcess process(Node processNode) {
  24                 JcrExecutionProcess process = new JcrExecutionProcess(processNode);
  25                 try {
  26                         SlcAgent slcAgent = findAgent(processNode);
  27                         if (slcAgent == null)
  28                                 throw new SlcException("Cannot find agent for " + processNode);
  29                         slcAgent.process(process);
  30                         return process;
  31                 } catch (Exception e) {
  32                         if (!process.getStatus().equals(ExecutionProcess.ERROR))
  33                                 process.setStatus(ExecutionProcess.ERROR);
  34                         throw new SlcException("Cannot execute " + processNode, e);
  35                 }
  36         }
  37
  38         public void kill(Node processNode) {
  39                 JcrExecutionProcess process = new JcrExecutionProcess(processNode);
  40                 try {
  41                         SlcAgent slcAgent = findAgent(processNode);
  42                         if (slcAgent == null)
  43                                 throw new SlcException("Cannot find agent for " + processNode);
  44                         slcAgent.kill(process.getUuid());
  45                 } catch (Exception e) {
  46                         if (!process.getStatus().equals(ExecutionProcess.ERROR))
  47                                 process.setStatus(ExecutionProcess.ERROR);
  48                         throw new SlcException("Cannot execute " + processNode, e);
  49                 }
  50         }
  51
  52         /** Always return the default runtime agent */
  53         protected SlcAgent findAgent(Node processNode) throws RepositoryException {
  54                 // we currently only deal with single agents
  55                 // Node realizedFlowNode = processNode.getNode(SlcNames.SLC_FLOW);
  56                 // NodeIterator nit = realizedFlowNode.getNodes();
  57                 // if (nit.hasNext()) {
  58                 // // TODO find a better way to determine which agent to use
  59                 // // currently we check the agent of the first registered flow
  60                 // Node firstRealizedFlow = nit.nextNode();
  61                 // // we assume there is an nt:address
  62                 // String firstFlowPath = firstRealizedFlow
  63                 // .getNode(SlcNames.SLC_ADDRESS)
  64                 // .getProperty(Property.JCR_PATH).getString();
  65                 // Node flowNode = processNode.getSession().getNode(firstFlowPath);
  66                 // String agentFactoryPath = SlcJcrUtils
  67                 // .flowAgentFactoryPath(firstFlowPath);
  68                 // if (!agentFactories.containsKey(agentFactoryPath))
  69                 // throw new SlcException("No agent factory registered under "
  70                 // + agentFactoryPath);
  71                 // SlcAgentFactory agentFactory = agentFactories.get(agentFactoryPath);
  72                 // Node agentNode = ((Node) flowNode
  73                 // .getAncestor(SlcJcrUtils.AGENT_FACTORY_DEPTH + 1));
  74                 // String agentUuid = agentNode.getProperty(SlcNames.SLC_UUID)
  75                 // .getString();
  76                 //
  77                 // // process
  78                 // return agentFactory.getAgent(agentUuid);
  79                 // }
  80
  81                 return agent;
  82         }
  83
  84         public void setAgent(SlcAgent agent) {
  85                 this.agent = agent;
  86         }
  87
  88         // public synchronized void register(SlcAgentFactory agentFactory,
  89         // Map<String, String> properties) {
  90         // String path = properties.get(SlcJcrConstants.PROPERTY_PATH);
  91         // if (log.isDebugEnabled())
  92         // log.debug("Agent factory registered under " + path);
  93         // agentFactories.put(path, agentFactory);
  94         // }
  95         //
  96         // public synchronized void unregister(SlcAgentFactory agentFactory,
  97         // Map<String, String> properties) {
  98         // String path = properties.get(SlcJcrConstants.PROPERTY_PATH);
  99         // if (log.isDebugEnabled())
 100         // log.debug("Agent factory unregistered from " + path);
 101         // agentFactories.remove(path);
 102         // }
 103 }